这些副词均表示频度。
always :总是,永远。语气最强,指在一切时候,没有例外。
- There's always somebody at home in the evenings.
晚上总有人在家。
often :经常,语气弱于always,侧重动作发生的次数具有经常性,具体时间意味不强。
- We often go there.
我们常去那里。
usually :通常,通例地,指习惯性动作,频度仅次于always,较often大,偶尔有间隔。
- I'm usually home by 6 o'clock.
我一般6点钟回到家。
frequently :时常,经常,与often同义,可通用,但较正式,强调次数频繁。
- Buses run frequently between the city and the airport.
公共汽车频繁地来往于市区与机场之间。
repeatedly :屡次,强调次数多,但反复的频率不一定均匀。
- The rebel soldiers tried repeatedly to storm the building.
叛军屡次尝试强攻这座建筑。
regularly :用于修饰经常而有规律性的动作。
- We meet regularly to discuss the progress of the project.
我们定期会面,讨论工程进展情况。